Gas-heater.



No. 775,025. PATENTED NOV. 15, 1904.

I. BLOCK.

GAS HEATER.

. APPLICATION FILED D120. 1?, 1903. no MODEL.

' ll llll 1; MW m Patented November 15, 1904.

PATENT @EETQE.

ISRAEL BLOCK,- OF NEW YORK, N. Y.

GAS-H EATER.

SPECIFICATION forming part of Letters Patent No; 775,025, dated November15, 1904. Application filed December 17, 1903. Serial No. 185,509. (Nomodel.)

To all whom it may concern:

Be it known that I, IsRAnL BLocK, a citizen of the United States,residing at New York, in the county and State of New York, have inventedcertain new and useful Improvements in Gas-Heaters, of which thefollowing is a specification.

My invention relates to gas-heaters; and it consists in constructing thesame in' the form of a casing mounted on a tube and provided withchambers and inlet and outlet openings, as fully set forth hereinafterand as illustrated in the accompanying drawings, in which Figure 1 is anelevation of my improved heater; Fig. 2, a sectional elevation; Fig. 8,a plan view.

The heater consists of a hollow casing A, which is mounted upon a tubeB, open at both ends, the upper end communicating with the bottom of thecasing and the lower end being pressed to form screw-threads 1, adaptedto the screw-threads of a flange 2 of a cap O. The bottom of the cap hasperforations and a central opening t, surrounded by a flange or shorttube 5, that receives the gas-burner to which the heater is applied andserves as a means of connecting the two and supporting the heaterproperly upon the burner.

The casing A consists of three partsthe dished or conical bottom 6, theinverted dishshaped top 7, and a transverse partition 8, which dividesthe casing in to two chambers my. The bottom 6 has in it perforations 9of any desired character and arrangement, and the top has a series ofperforations 10, near the outer edge at the lowest part, and upperperforations 12. Preferably these parts are all made of sheet metal, themeeting edges of the parts 6, 7, and 8 being brought together andconnected by turning the flange of one part over that of the other. Bymaking the cap C of a separate threaded piece it may be drawn up orformed of soft metal and readily applied to the tube B, and when it isrequired to change the character of this part to adaptthe heater-to adifferent form or size of a gasburner one cap can be removed and anothersubstituted without any change in the permanent parts of the structure.

The heater is put into use by mounting it upon a gas-burner and turningon the gas, whichwill flow upward into the chamber fl drawing up with ita supply of air, which passes through theopenings 3, and the air and gasmiX in the chamber ;1 and flow outward through the openingsf), where themixture is ignited and burns'with a flame which laps the bottom of thecasing and quickly heats all parts of the latter and the air of the roomin which the heater is used. The air is not only heated by contact withthe outer faces of the bottom and top parts 6 and 7, but a more extendedheating-surface is attained by the arrangement of openings 10 12, theair flowing through the openings 10 and out of the openings 12 and beingtherefore heated by contact with the highly-heated upper surface of thepartition 8 and the inner surface of the top portion 7, so that a muchgreater heating effect is secured than when no means is provided forpermitting the air to flow into and out of the chamber By constructingthe casing A with a flat top a dish, pot, or other receptacle can beplaced on and supported by said top and the contents heated.

. Without limiting myself to the construction shown, I claim Thecombination of the casing A divided by a-partition into two chambers 0;,1 and having openings 9, 10 and 12, a tube B open at the upper end andconnected to the bottom of the casing and threaded at the lower end, anda cap 0 having a threaded flange engaging the threaded portion of thetube B, and with airinlet openings 3 and a central opening A surroundedby a flange 5, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ISRAEL BLOCK.

Witnesses:

WILL LEVY, LOUIS M. BLOCK.

